Second order fluid drive

Abstract

This utility model belongs to the field of electronic equipment technology, and particularly relates to heat dissipation of electronic equipment. This utility model provides a second-order fluid drive device, comprising: an upper shell with at least two rows of air inlets; a base with at least three rows of air outlets on the side of the base facing the heat source; and a resonator structure disposed within a storage space. The resonator structure includes: an elastic body having a fixed module and a vibration module, with a vent hole between the fixed module and the vibration module; the vibration module includes a central vibration region and a pair of edge vibration regions, with piezoelectric ceramic plates disposed in the central vibration region and / or the edge vibration regions. This utility model combines the central vibration region and the edge vibration regions with multiple rows of air inlets and outlets, allowing the piezoelectric ceramic plates to be flexibly configured in the central or edge regions, thereby exciting the second-order composite mode of the piezoelectric ceramic plates, accelerating the high-speed exhaust of air from the outlets, and improving heat dissipation efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of electronic equipment technology, specifically relating to heat dissipation of electronic equipment, and particularly to a second-order fluid drive device. Background Technology

[0002] Various types of smart electronic devices have been widely integrated into all aspects of work, study, and life. As more and more functions are integrated, the overall power consumption is increasing, and the requirements for heat dissipation are also increasing. If heat dissipation cannot be completed quickly, the operating temperature of smart electronic devices will be too high, which will lead to malfunctions and even affect performance and lifespan.

[0003] However, with the continuous development of miniaturization of smart electronic devices, traditional mechanical fan cooling, which relies on mechanical rotating parts, suffers from problems such as high noise, short lifespan, and high energy consumption, and is difficult to meet the needs of ultra-thin devices. Among related technologies, piezoelectric cooling fans are a new type of cooling solution; however, these technologies use piezoelectric ceramic plates for driving, resulting in low airflow efficiency and limited heat dissipation capacity. In the heat dissipation scenarios of high-power electronic devices, heat accumulation or uneven heat dissipation is likely to occur.

[0004] Therefore, how to solve the problem of insufficient airflow efficiency leading to heat accumulation is a technical problem that urgently needs to be solved in this field.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Utility Model Content

[0006] This disclosure provides at least one second-order fluid drive device to solve the technical problem of thermal reactors caused by insufficient airflow efficiency.

[0007] In a first aspect, embodiments of this disclosure provide a second-order fluid drive device, comprising: an upper shell having at least two rows of air inlets; a base that is fastened to the upper shell to form a storage space, the base having at least three rows of air inlets on the side facing the heat source; and a resonator structure disposed within the storage space, with air ducts provided on the surfaces adjacent to the upper shell and the base; the resonator structure comprising: an elastomer having a fixing module and a vibration module, the fixing module being connected to the upper shell and the base respectively, and a vent being provided between the fixing module and the vibration module; the vibration module comprising a central vibration region and a pair of edge vibration regions, the central vibration region and / or the edge vibration regions having piezoelectric ceramic sheets disposed on the side facing the upper shell; and an FPCB circuit fixed to and electrically connected to the piezoelectric ceramic sheets; wherein at least one of the piezoelectric ceramic sheets is configured to be able to be excited to generate a second-order composite mode to produce high-frequency vibration, thereby causing the elastomer to deform and drawing in outside air from the air inlets and discharging it through the air outlets.

[0008] In one optional embodiment, one or two piezoelectric ceramic sheets are disposed on the central vibration region; one piezoelectric ceramic sheet is disposed on each of the pair of edge vibration regions; one piezoelectric ceramic sheet is disposed on the central vibration region and one piezoelectric ceramic sheet is disposed on each of the pair of edge vibration regions; two piezoelectric ceramic sheets are disposed on the central vibration region and one piezoelectric ceramic sheet is disposed on each of the pair of edge vibration regions.

[0009] In one optional embodiment, the upper shell is provided with an upper boss facing the elastomer, and the base is provided with a lower boss facing the elastomer. The upper boss and the lower boss are adapted to compress and fix the elastomer.

[0010] In one optional embodiment, a central clearance groove is provided on the side of the central vibration region facing the base, and an edge clearance groove is provided on the side of the edge vibration region facing the base; wherein, when the piezoelectric ceramic sheet vibrates, it causes the elastomer to deform, and when the central vibration region / the edge vibration region deforms in the direction of the upper shell, the edge of the central clearance groove or the edge clearance groove prevents gas backflow.

[0011] In one alternative implementation, the base is supported against a heat source via a support platform.

[0012] Secondly, this disclosure also provides a second-order fluid drive device, comprising: an upper shell having at least two rows of air inlets on its surface; a base that is fastened to the upper shell to form a storage space, the lower surface of the base having at least three rows of air inlets; and a resonator structure disposed within the storage space, with air ducts provided on the surfaces adjacent to the upper shell and the base; the resonator structure comprising: an elastic body having a fixing module and a vibration module, the fixing module being connected to the upper shell and the base respectively, and a vent hole being provided between the fixing module and the vibration module; the upper shell having an upper boss facing the elastic body, and the base having a lower boss facing the elastic body, the upper boss and the lower boss being adapted to compress the fixing elastic body; the vibration module including a central vibration region and a pair of The edge vibration region, the central vibration region and / or the edge vibration region are provided with a piezoelectric ceramic sheet on the side facing the upper shell, and the FPCB circuit is fixed and electrically connected to the piezoelectric ceramic sheet; the central vibration region is provided with a central clearance groove on the side facing the base; the edge vibration region is provided with an edge clearance groove on the side facing the base; wherein, at least one of the piezoelectric ceramic sheets is configured to be able to be excited to generate a second-order composite mode to generate high-frequency vibration, thereby causing the elastic body to deform, thereby drawing in outside air from the air inlet and discharging it through the air outlet, and when the central vibration region / the edge vibration region deforms in the direction of the upper shell, the edge of the central clearance groove or the edge clearance groove prevents gas backflow.

[0013] In one alternative implementation, one or two piezoelectric ceramic sheets are disposed on the central vibration region.

[0014] In one alternative embodiment, a piezoelectric ceramic sheet is disposed on each of the pair of edge vibration regions.

[0015] In one optional embodiment, a piezoelectric ceramic sheet is disposed on the central vibration region, and a piezoelectric ceramic sheet is disposed on each of the pair of edge vibration regions.

[0016] In one optional embodiment, two piezoelectric ceramic sheets are disposed on the central vibration region, and one piezoelectric ceramic sheet is disposed on each of a pair of edge vibration regions.

[0017] The beneficial effects of this utility model are that it provides a two-stage fluid drive device, which significantly improves airflow drive efficiency and enhances heat dissipation capacity by combining a central vibration region and an edge vibration region with multiple rows of air inlets and outlets. The piezoelectric ceramic sheet can be flexibly configured in the central or edge region to achieve single-point or multi-point drive, accelerate the intake of air from the air inlet and high-speed exhaust from the air outlet, directly act on the heat source, and improve heat dissipation efficiency.

[0018] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 A perspective view of a second-order fluid drive device provided in an embodiment of this disclosure; Figure 2 A cross-sectional view of a second-order fluid drive device provided in an embodiment of this disclosure; Figure 3 A diagram showing the orientation of the elastomer to the base provided in an embodiment of this disclosure; Figure 4A perspective view of an elastomer with a single electroceramic sheet provided in an embodiment of this disclosure; Figure 5 A perspective view of an embodiment of this disclosure having a pair of electroceramic sheet elastomers; Figure 6 A perspective view of an elastomer with three electroceramic sheets provided in an embodiment of this disclosure; Figure 7 A perspective view of an elastomer with four electroceramic sheets provided for an embodiment of this disclosure.

[0022] In the picture: 1. Base; 11. Vent; 12. Lower boss; 13. Support platform; 2. Resonator structure; 21. Elastic body; 211. Fixing module; 212. Vibration module; 212a. Central vibration region; 212b. Edge vibration region; 22. Electro-ceramic sheet; 23. FPCB circuit; 24. Vent hole; 25. Central clearance groove; 26. Edge clearance groove; 3. Upper shell; 31. Air inlet; 32. Upper boss; 4. Heat source. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0025] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0026] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise clearly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.

[0027] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0028] Research has revealed the following drawbacks of existing technologies: With the continuous miniaturization trend of smart electronic devices, traditional mechanical fan cooling, which relies on mechanical rotating parts, suffers from problems such as high noise, short lifespan, and high energy consumption, and is difficult to meet the needs of ultra-thin devices. Among related technologies, piezoelectric cooling fans are a new type of cooling solution; however, these technologies use piezoelectric ceramic plates for driving, resulting in low airflow efficiency and limited heat dissipation capacity. In the heat dissipation scenarios of high-power electronic devices, heat accumulation or uneven heat dissipation is likely to occur.

[0029] Therefore, how to solve the heat accumulation caused by insufficient airflow efficiency is a technical problem that urgently needs to be solved in this field.

[0030] The shortcomings of the above solutions are the result of the utility model inventor's practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as contributions made by the utility model inventor to this disclosure.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0033] like Figures 1 to 7 As shown, some embodiments provide a second-order fluid drive device, including: an upper shell 3, the surface of which is provided with at least two rows of air inlets 31; the air inlets 31 provide an inlet for external airflow, and the number of rows can increase the uniformity of the airflow; the upper boss 32 cooperates with the lower boss 12 of the base 1 to form a vertical compression fixation on the elastic body 21; the fastening with the base 1 forms a storage space to accommodate the resonator structure 2 and the air duct, and together with the lower boss 12, it compresses and fixes the elastic body 21 to ensure its positional stability; the multiple rows of air inlets improve the air intake efficiency, and the cooperation between the lower boss 12 and the upper boss 32 simplifies the installation and fixation of the elastic body 21, avoids displacement caused by vibration, and ensures the sealing of the air duct structure.

[0034] The base 1, which is fastened to the upper shell 3 to form a storage space, has at least three rows of vents 11 on the side of the base 1 facing the heat source 4. The storage space provides physical protection for the resonator structure 2 and a closed environment for the airflow channel. The vents 11 are designed to disperse and discharge high-speed airflow, increasing the heat dissipation coverage area. The support platform 13 directly contacts the heat source 4, positioning the device in the target heat-generating area. The lower boss 12 and the upper boss 32 cooperate to fix the elastic body 21. Together with the upper shell 3, it forms a closed boundary of the air duct, couples with the support platform 13 to achieve heat source coupling, and works with the lower boss 12 to fix the elastic body 21. The multiple vents improve heat dissipation efficiency, the support platform ensures close contact with the heat source to enhance heat conduction, and the cooperation between the lower boss 12 and the upper boss 32 simplifies assembly and improves structural stability.

[0035] The resonator structure 2 is set in the storage space and has air ducts on the adjacent surfaces of the upper shell 3 and the base 1; the resonator structure 2 is set in the storage space and has air ducts on the adjacent surfaces of the upper shell 3 and the base 1; the resonator structure 2 includes an elastic body 21, a piezoelectric ceramic sheet 22 and an FPCB circuit 23.

[0036] Specifically, the resonator structure 2 includes an elastic body 21, which has a fixing module 211 and a vibration module 212. The fixing module 211 is connected to the upper shell 3 and the base 1 respectively. A vent hole 24 is provided at the connection position between the fixing module 211 and the vibration module 212.

[0037] It should be further explained that the fixed module 211 serves as a support part and achieves overall positioning by connecting the upper shell 3 / base 1; the vibration module 212 is a flexible and deformable area that generates high-frequency vibration under the drive of the piezoelectric ceramic sheet 22; the vent 24 is located at the connection between the fixed and vibration modules, allowing airflow to pass through during vibration deformation, avoiding air pressure accumulation that hinders deformation; the fixed module 211 is fixed in conjunction with the upper boss 32 and the lower boss 12, and the deformation of the vibration module 212 drives the airflow; the vent 24 is connected to the air duct to ensure airflow continuity, achieve precise drive, and maintain air pressure balance, thereby improving vibration efficiency and airflow stability.

[0038] The vibration module 212 includes a central vibration region 212a and a pair of edge vibration regions 212b. A piezoelectric ceramic sheet 22 is provided on the side of the central vibration region 212a and / or the edge vibration region 212b facing the upper shell 3. At least one piezoelectric ceramic sheet 22 triggers the elastic body 21 to vibrate and deform at high frequency during vibration, so as to form a vibrating airflow in the air duct, so that the airflow entering the air inlet 31 is discharged from the air outlet 11. An FPCB circuit 23 is provided on one side of the piezoelectric ceramic sheet 22.

[0039] The central vibration region 212a is located in the middle of the elastic body 21, and the edge vibration regions 212b are located on both sides. When the piezoelectric ceramic sheet 22 is energized, it generates a periodic stretching and contraction inverse piezoelectric effect, which drives the vibration module 212 in the corresponding region to undergo bending / stretching deformation, thereby driving the entire elastic body 21 to vibrate at high frequency, i.e., the second-order vibration mode. The piezoelectric ceramic sheet 22 provides the driving force, and the FPCB circuit 23 transmits the electrical signal. The vibration deformation drives the airflow from the air inlet 31 to the air outlet 11 through the air duct. That is, the zoned vibration design, i.e., the center + edge mode, can optimize the vibration mode and improve the airflow generation efficiency. The second-order vibration mode enhances the airflow speed and flow rate.

[0040] In a preferred embodiment, one or two piezoelectric ceramic plates 22 are provided on the central vibration region 212a. A single piezoelectric ceramic plate 22 generates basic vibration, while two piezoelectric ceramic plates 22 can enhance the driving force or adjust the vibration by being connected in parallel or series. Symmetrical arrangement can achieve more uniform deformation, flexibly adjust the driving force, and adapt to different heat dissipation requirements.

[0041] In a preferred embodiment, a piezoelectric ceramic sheet 22 is provided on each of a pair of edge vibration regions 212b. The piezoelectric ceramic sheet 22 in the edge region drives the two sides to vibrate synchronously, forming a synergistic effect with the central region, expanding the vibration coverage, improving the overall vibration uniformity, and enhancing the airflow generation capability.

[0042] In a preferred embodiment, a piezoelectric ceramic sheet 22 is disposed on the central vibration region 212a, and a piezoelectric ceramic sheet 22 is disposed on each of the pair of edge vibration regions 212b. The center and the edges are driven together, with the central region providing the main vibration energy and the edge regions assisting in expanding the vibration amplitude, balancing the distribution of driving force, and optimizing the airflow directionality.

[0043] As a preferred embodiment, two piezoelectric ceramic sheets 22 are provided on the central vibration region 212a, and one piezoelectric ceramic sheet 22 is provided on each of the pair of edge vibration regions 212b. The two piezoelectric ceramic sheets 22 in the central region enhance the main vibration intensity, and the edge regions supplement the vibration energy, which significantly improves the airflow speed and flow rate, and is suitable for high heat flux density scenarios.

[0044] The FPCB circuit 23 is a flexible printed circuit board (FPCB) located on the side of the piezoelectric ceramic sheet 22 facing the upper shell 3. It is used to connect the piezoelectric ceramic sheet 22 to the external power supply / control circuit, transmit high-frequency electrical signals, drive the piezoelectric ceramic sheet to generate the inverse piezoelectric effect, and make direct contact with the piezoelectric ceramic sheet 22 to ensure efficient transmission of electrical signals. It is integrated inside the resonator structure 2, saving space and protecting the circuit. It simplifies wiring, improves the reliability of electrical signal transmission, and supports precise control of vibration frequency and amplitude.

[0045] The upper shell 3 has an upper boss 32 facing the elastomer 21, and the base 1 has a lower boss 12 facing the elastomer 21. The upper boss 32 and the lower boss 12 are suitable for pressing and fixing the elastomer 21. Through mechanical pressing, the upper boss 32 and the lower boss 12 tightly clamp the fixing module 211 of the elastomer 21 between the upper shell and the base, restricting its lateral / longitudinal displacement and ensuring that the deformation direction of the vibration module 212 is controllable. Together with the upper shell 3 and the base 1, they form a closed storage space, which directly contacts the fixing module 211 to achieve positioning, simplifying the assembly process, avoiding air leakage or efficiency reduction caused by the loosening of the elastomer 21 during vibration, and improving the reliability of the device.

[0046] A central clearance groove 25 is provided on the side of the central vibration region 212a facing the base 1, and an edge clearance groove 26 is provided on the side of the edge vibration region 212b facing the base 1. When the piezoelectric ceramic sheet 22 vibrates, it causes the elastic body 21 to vibrate and deform. When the elastic body 21 deforms in the direction of the upper shell 3, the edge of the central clearance groove 25 or the edge clearance groove 26 forms a blockage with the top surface of the base 1 to prevent gas backflow.

[0047] Specifically, the clearance groove provides space for the deformation of the elastomer 21 towards the base 1, preventing direct collision with the base; when the elastomer 21 deforms downward to its limit position, the edge of the clearance groove contacts and seals the top surface of the base 1, preventing airflow from flowing back from the air outlet 11 into the air duct, thus forming a one-way airflow channel; working in conjunction with the air outlet 11 and the air inlet 31, it ensures that the airflow only flows in the direction of air inlet-air duct-air outlet; and cooperating with the support platform 13, it maintains the stability of the heat source contact, prevents airflow backflow, improves airflow utilization, and enhances the heat dissipation effect.

[0048] The base 1 abuts against the heat source 4 via the support platform 13. The support platform 13 provides the contact interface between the base 1 and the heat source 4. The heat generated by the heat source is conducted to the base 1 through direct contact, and then the hot air is carried away and discharged through airflow. Together with the upper shell 3 and the base 1, they form a heat exchange path, ensuring close contact between the heat source and the device, improving heat conduction efficiency, and maximizing heat dissipation performance.

[0049] Some embodiments provide a second-order fluid drive device, including: an upper shell 3, the surface of which is provided with at least two rows of air inlets 31; a base 1, which is fastened to the upper shell 3 to form a storage space, the lower surface of the base 1 being provided with at least three rows of air inlets 11; and a resonator structure 2, which is disposed in the storage space and has air ducts on the adjacent surfaces of the upper shell 3 and the base 1.

[0050] The resonator structure 2 includes: an elastic body 21, which has a fixing module 211 and a vibration module 212. The fixing module 211 is connected to the upper shell 3 and the base 1 respectively. A vent hole 24 is provided at the connection position between the fixing module 211 and the vibration module 212. The upper shell 3 is provided with an upper boss 32 facing the elastic body 21, and the base 1 is provided with a lower boss 12 facing the elastic body 21. The upper boss 32 and the lower boss 12 are suitable for compressing and fixing the elastic body 21.

[0051] The vibration module 212 includes a central vibration region 212a and a pair of edge vibration regions 212b. A piezoelectric ceramic sheet 22 is provided on the side of the central vibration region 212a and / or the edge vibration region 212b facing the upper shell 3. An FPCB circuit 23 is provided on one side of the piezoelectric ceramic sheet 22.

[0052] A central clearance groove 25 is provided on the side of the central vibration region 212a facing the base 1; an edge clearance groove 26 is provided on the side of the edge vibration region 212b facing the base 1; wherein, at least one piezoelectric ceramic sheet 22 is configured to: trigger the high-frequency deformation of the elastomer 21 by vibration to form a vibrating airflow in the air duct, so that the airflow entering the air inlet 31 is discharged from the air outlet 11, and when the elastomer 21 deforms in the direction of the base 1, the edge of the central clearance groove 25 or the edge clearance groove 26 forms a blockage with the top surface of the base 1 to prevent gas backflow.

[0053] One or two piezoelectric ceramic sheets 22 are provided on the central vibration region 212a.

[0054] A piezoelectric ceramic sheet 22 is disposed on each of a pair of edge vibration regions 212b.

[0055] A piezoelectric ceramic sheet 22 is disposed on the central vibration region 212a, and a piezoelectric ceramic sheet 22 is disposed on each of the pair of edge vibration regions 212b.

[0056] Two piezoelectric ceramic sheets 22 are disposed on the central vibration region 212a, and one piezoelectric ceramic sheet 22 is disposed on each of the pair of edge vibration regions 212b.

[0057] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0058] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as the second element, component, region, layer, or segment.

[0059] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A second-order fluid drive device, characterized in that, include: The upper shell (3) is provided with an air inlet (31); The base (1) is fastened to the upper shell (3) to form a storage space, and the base (1) has an air vent (11) on the side facing the heat source (4). The resonator structure (2) is set in the storage space and has air ducts on the adjacent surfaces of the upper shell (3) and the base (1); The resonator structure (2) includes: The elastomer (21) has a fixing module (211) and a vibration module (212). The fixing module (211) is connected to the upper shell (3) and the base (1) respectively. A vent hole (24) is provided between the fixing module (211) and the vibration module (212). The vibration module (212) includes a central vibration region (212a) and a pair of edge vibration regions (212b). The central vibration region (212a) and / or the edge vibration region (212b) are provided with piezoelectric ceramic sheets (22). The FPCB circuit (23) is fixed and electrically connected to the piezoelectric ceramic sheets (22). At least one of the piezoelectric ceramic sheets (22) is configured to be able to generate high-frequency vibration by being excited to a second-order composite mode, thereby causing the elastic body (21) to deform and thus drawing in outside air from the air inlet (31) and discharging it through the air outlet (11).

2. The second-order fluid drive device as described in claim 1, characterized in that, One or two piezoelectric ceramic sheets (22) are provided on the central vibration region (212a). A piezoelectric ceramic sheet (22) is provided on each of the pair of edge vibration regions (212b); A piezoelectric ceramic sheet (22) is provided on the central vibration region (212a), and a piezoelectric ceramic sheet (22) is provided on each of the pair of edge vibration regions (212b). Two piezoelectric ceramic sheets (22) are provided on the central vibration region (212a), and one piezoelectric ceramic sheet (22) is provided on each of the pair of edge vibration regions (212b).

3. The second-order fluid drive device as described in claim 2, characterized in that, The upper shell (3) is provided with an upper boss (32) facing the elastomer (21), and the base (1) is provided with a lower boss (12) facing the elastomer (21). The upper boss (32) and the lower boss (12) are adapted to compress and fix the elastomer (21).

4. The second-order fluid drive device as described in claim 3, characterized in that, The central vibration region (212a) is provided with a central clearance groove (25) on the side facing the base (1), and the edge vibration region (212b) is provided with an edge clearance groove (26) on the side facing the base (1). When the piezoelectric ceramic sheet (22) vibrates, it causes the elastic body (21) to deform. When the central vibration region (212a) / the edge vibration region (212b) deforms in the direction of the upper shell (3), the edge of the central clearance groove (25) or the edge clearance groove (26) prevents gas backflow.

5. The second-order fluid drive device as described in claim 4, characterized in that, The base (1) is against the heat source (4) via the support platform (13).

6. A second-order fluid drive device, characterized in that, include: The upper shell (3) has an air inlet (31) on its surface. The base (1) is fastened to the upper shell (3) to form a storage space, and the lower surface of the base (1) is provided with an air vent (11). The resonator structure (2) is set in the storage space and has air ducts on the adjacent surfaces of the upper shell (3) and the base (1); The resonator structure (2) includes: The elastomer (21) has a fixing module (211) and a vibration module (212). The fixing module (211) is connected to the upper shell (3) and the base (1) respectively. A vent hole (24) is provided between the fixing module (211) and the vibration module (212). The upper shell (3) is provided with an upper boss (32) facing the elastomer (21), and the base (1) is provided with a lower boss (12) facing the elastomer (21). The upper boss (32) and the lower boss (12) are adapted to compress and fix the elastomer (21). The vibration module (212) includes a central vibration region (212a) and a pair of edge vibration regions (212b). The central vibration region (212a) and / or the edge vibration region (212b) are provided with piezoelectric ceramic sheets (22). The FPCB circuit (23) is fixed and electrically connected to the piezoelectric ceramic sheets (22). The central vibration area (212a) is provided with a central clearance groove (25) on the side facing the base (1). The edge vibration region (212b) is provided with an edge clearance groove (26) on the side facing the base (1). At least one of the piezoelectric ceramic sheets (22) is configured to be able to generate high-frequency vibration by being excited to a second-order composite mode, thereby causing the elastic body (21) to deform and thus drawing in outside air from the air inlet (31) and discharging it through the air outlet (11). When the central vibration region (212a) / the edge vibration region (212b) deforms in the direction of the upper shell (3), the edge of the central clearance groove (25) or the edge clearance groove (26) prevents gas backflow.

7. The second-order fluid drive device as described in claim 6, characterized in that, One or two piezoelectric ceramic sheets (22) are provided on the central vibration region (212a).

8. The second-order fluid drive device as described in claim 6, characterized in that, Each of the pair of edge vibration regions (212b) is provided with a piezoelectric ceramic sheet (22).

9. The second-order fluid drive device as described in claim 6, characterized in that, A piezoelectric ceramic sheet (22) is disposed on the central vibration region (212a), and a piezoelectric ceramic sheet (22) is disposed on each of the pair of edge vibration regions (212b).

10. The second-order fluid drive device as described in claim 6, characterized in that, Two piezoelectric ceramic sheets (22) are provided on the central vibration region (212a), and one piezoelectric ceramic sheet (22) is provided on each of the pair of edge vibration regions (212b).

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